Nimbus Snowmobile Boot is the top-of-the-line backcountry snowmobile boot. This premium snowmobile boot utilizes 1200 grams of insulation and the Sympatex® membrane makes it 100% wind & waterproof. The revolutionary 2-in-1 design of this boot offers incredible functionality. First, the inner boot is soft and well-cushioned for a long, comfortable ride. Secondly, after a few hours of wearing these boots, the natural heat given off by your body custom-molds the inner boots to the shape of your feet. Features 100% wind & waterproof Optimal breathability Heavy duty materials Moisture wicking liner 45 000 mm Water Column Sympatex® membrane 100% wind & waterproof 1200 grams Insulation Reinforced seams Dual zone BOA® system Metal D-ring for boot gaiters Snowbike shifter friendly toe BOA® coiler dial on tongue BOA® highest-tensile strength SS2 lace Dual zone BOA® system